Bk-precision 879B - Manual Manual do Utilizador

Model 878B, 879B Dual Display LCR METER INSTRUCTION MANUAL

8 L/C/R/Z Select Mode ... 29 D/Q/θ/ESR Select Mode ...

98 LIMITED WARRANTY B&K Precision Corp. warrants to the original purchaser that its products and the component parts thereof, will be free fr

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22820 Savi Ranch Parkway Yorba Linda, CA 92887 www.bkprecision.com © 2010 B&K Precision Corp. Printed in China

9 SUPPLEMENTAL INFORMATION ... 80 Selecting Test Frequency ... 80 Selecting Serie

10 INTRODUCTION B&K Precision’s 878B and 879B 40,000-count L/C/R hand-held meter is designed ideally for measuring inductance, capacitance

11 A single 9V battery or the included DC 12V power adaptor (model 879B only) can be used to power the meter. This gives user flexibility for por

12 FRONT PANEL OVERVIEW + -R!LCRRELESRMAXAVGMIN¦ÈQAUTOD1%5%10%20%deg %kHzPALSER¦ÌHp F¦ÌRMTMkTOLDHnn@OFFZ12453678910131211USBD/Q//ESRL/C/R/ZPOWE

13 Front Panel Display Descriptions 1. LCD Display 2. Power ON/OFF Button 3. USB Communication / *Back light button 4. Secondary Display mode

14 WARNING: Before connecting an external power adapter, please check the battery compartment in the rear side of the unit. If a battery is inst

15 color. Each color has a specific representation, as described below: White – With the exception of the button, all white colored labels rep

16 LCD DISPLAY OVERVIEW LCRRELESRMAXAVGMIN¦ÈQAUTOD1%5%10%20%degkHzPALSER¦ÌHp F¦ÌRMTMkTOLDHnn@OFFZ12 59 1012141620212627288323242541511136 7221718

17 6. Θ – *Phase angle indicator for secondary display 7. Q – Quality factor indicator 8. ESR – *Equivalent series resistance indicator 9. –

18 29. MAX AVG MIN – Recording mode indicators *For model 879B only. Not included on model 878B. Special Display Indicators Indicates short

19 POWERING INSTRUMENT Before beginning to operate the instrument, a power source is necessary for it to turn on. There are two methods to power

20 Figure 3 - Back Cover 2. Insert 9V battery into compartment. Note the positive (+) and negative (-) terminals as indicated inside the batter

21 3. Place the battery compartment cover piece by sliding it into the top slid first. Place screw at the bottom of the cover piece and tight

22 For external power, use AC adapter rated for output 12VDC, 150mA, with a standard 4mm connector only. WARNING: Use of incorrect adapters may d

23 3. Now, connect the AC Adapter socket into an electrical outlet. 4. Push and hold down the button for 2 seconds to turn on the instrument.

24 starts flashing the indicator, the battery voltage is below normal working voltage. In this case, accuracy of the meter will also decrease.

25 brightness for 15 seconds. After another 15 seconds (30 seconds total from the time of turning on), the back light will automatically turn off

26 OPERATION INSTRUCTIONS Data Hold The data hold function allows the user to freeze the display when pressed, holding the measured value until d

27 Enable Static Recording Press and hold down the button for two seconds to enter the static recording mode. The display should indicate “MAX A

1 Safety Summary The following safety precautions apply to both operating and maintenance personnel and must be observed during all phases of oper

28 the input sockets or terminals. As recording is performed, maximum, minimum, and average values will be stored after a brief moment. A beep t

29 Disable Static Recording To exit this mode, press and hold the button for two seconds. The “MAX AVG MIN”, “MAX”, “MIN”, or “AVG” indicator wi

30 D/Q/θ/ESR Select Mode The secondary display of the LCR meter is used to indicate measured values for four various parameters (two for model 878

31 For details on selecting the optimal test frequency for measurement, refer to the “SUPPLEMENTAL INFORMATION” section. Selecting Frequency To s

32 that any measurements taken will not take into account the test leads. Setup Relative Mode To setup the relative mode, simply press the butt

33 Disable Relative mode To disable relative mode, simply press the button once more. The “REL” indicator will disappear, which indicates the r

34 Setup Tolerance 1. Select the primary measurement mode based on the type of components to be measured. This is done by pressing the (or

35 WARNING: If the component to be measured is a capacitor, be sure that the capacitor is fully discharged BEFORE inserting it into the input so

36 3. Once the desired measured reading is displayed, press the button once to store the reading as the “standard” value or test reference valu

37 One single “beep” or tone means the component is within tolerance. Three “beeps” or tone means the component is out of tolerance. Disable Tol

2 service and repair to ensure that safety features are maintained. WARNINGS AND CAUTIONS WARNING and CAUTION statements, such as the following ex

38 power-off timing, power-up state, and reset instrument to default settings. Entering Utility Menu Press and hold down the button for two se

39 The four menu options allow users to control the beep sound setting (bEEP), auto power off setting (AoFF), power-up state settings (PuP), and r

40 Beep Sound Setting (bEEP) The “bEEP” menu option allows the user to enable or disable the beep sound for every key press. Note: This option o

41 Note: When the timer has reached the configured time, the meter will make an audible “beep” sound continuously for 10 seconds before auto powe

42 When the auto power-off option is set to any of the configured settings in Table 2 (except for “OFF”), upon exiting the utility menu the LCD di

43 In the utility menu, when the primary display shows “PuP”, there are two settings selectable and shown on the secondary display. “PrE” and “SE

44 settings for recalling at power-up. (see “Exit Utility Menu” for details) 2. Once settings are configured, enter/re-enter the utility menu by

45 procedure is used to overwrite previously stored settings into memory. Prevent Overwrite of Stored Settings In the utility menu, the “PuP” op

46 display shows “dEF”, either press or button to change the setting so that the secondary display shows “yES”. Upon saving and exiting the uti

47 Exit Utility Menu There are two methods for exiting the utility menu. One saves all the changed settings before exiting, and the other exits

3  This meter is for indoor use, altitude up to 2,000 m.  The warnings and precautions should be read and well understood before the instrumen

48 Parallel and Series Measurement Mode The LCR meter offers the option to select between parallel or series measurement mode. Depending on which

49 seconds. The indicators on the display should toggle between “SER” and “PAR”. Calibration Calibration is available on all modes. It is recomm

50 will be done when the button is pressed once. Within a few seconds, the meter will return to normal display and meter will be calibrated bas

51 Figure 8, which prompts for a “short”. Also, “REL” indicator will be blinking on the display. This is to prompt the user that the meter is wa

52 3. Select the measurement mode (i.e. Series or Parallel) 4. Once all settings are configured, hold down button for 2 seconds to enter into c

53 2. Either open or short calibration is not associated with measurement function, therefore changing the test function does not require re-cali

54 Figure 9 - Fuse Display In the event that the above screen is displayed, a fuse replacement is required. Turn off the meter by pressing and

55 QUICK START GUIDE CAUTION • Do not measure a capacitor that is not fully discharged. Connecting a charged or partially charged capacitor t

56 Note: To achieve optimum precision for all L, C, and R measurements at either the highest or lowest ranges, calibrate the meter before testing.

57 ESR measurement for secondary display. (θ and ESR function for model 879B only) 6. Read the display readings for inductance measured values a

4 Safety Symbols This symbol is a warning and indicates that the user should refer to the operating instructions located in the manual. DC Cu

58 Capacitance Measurement WARNING Fully discharge capacitor BEFORE inserting it into the instrument. Failure to do this may result in damage t

59 5. Press button until the desired test frequency is displayed on screen. 6. Press (or for model 878B) button to select between D fac

60 Resistance Measurement 1. Press down button for one second to turn on the meter. 2. Press (or for model 878B) button until “R” is on t

61 Figure 12 - Resistance Measurement Setup Impedance Measurement (Model 879B only) 1. Press down button for one second to turn on the meter.

62 3. Insert component into the input sockets or connect alligator leads into the banana jack input terminals and connect the clips to the compon

63 REMOTE COMMUNICATION The meter has the capability to communicate with a PC over the mini USB interface. Upon installation of a USB driver, th

64 port. Windows will automatically assign a COM port to the instrument. Please verify which COM port Windows has assigned by going into “Device

65 USB (Virtual COM) Configuration The USB will be recognized as a virtual COM on the PC, thus serial port settings must be configured properly fo

66 buttons will be disabled, except for the (or for model 878B) button. To exit remote mode and go back to local mode, press the (or for

67 Enable/Disable Auto Fetching To toggle between enabling and disabling auto fetching, press the (or for model 878B) button. When enabled, d

5 This product is subject to Directive 2002/96/EC of the European Parliament and the Council of the European Union on waste electrical and electr

68 commands and Standard Commands for Programmable Instruments (SCPI). Some commands are device-specific to the meter. They are not included in th

69 function is a root level keyword with the second level keyword, impa, and L is the command parameter. The query command ends with a question ma

70 measurement cycle is completed. The format of the printed data will be shown as the following: <Primary measured data, Secondly measured d

71 query command <Literal> A string is used as command parameters with short literal form HOLD SCPI Commands This section described all t

72 *IDN? Description: Queries the instrument ID. Response: <instrument model>, <firmware version>, <serial number> *LLO Local

73 FUNCtion subsystem FUNCtion:impa < L | C | R | Z > (Z for model 879B only) Description: Select primary parameter Example: FUNCt

74 FUNCtion:EQUivalent < SERies | parallel | PAL > Description: Set equivalent mode Parameters: SERies — serial mode Parallel

75 CALCulate:RELative:VALUe? Description: Query the relative value Response: Return <NR3> or “-----” format string CALCulate:TOLerance:ST

76 CALCulate:TOLerance:RANGe? Description: Query the tolerance range Response: Return “BIN1”, “BIN2”, “BIN3”, “BIN4” or “----” format string CA

77 CALCulate:RECording:AVERage? Description: Query the average value of recording function Response: Return <NR3, NR3> or “-----” format s

6 Environmental Conditions Operating Environment 0 °C to 40 °C Storage Humidity 0 – 80% R.H. Storage Environment -20 °C to +50 °C Pollution degre

78 Summary of Supported SCPI Commands Table 6 - Summary of SCPI Commands Command Parameter Explanation FREQuency <Value> Set Test Frequency

79 :STATe <Boolean> Enable/disable recording function :STATe? Query recording state :MAXimum? Query max. val

80 SUPPLEMENTAL INFORMATION This section provides supplemental information for user consideration when operating the LCR meters. Some recommenda

81 example, if the capacitance of the component is to be in the mF range, than selecting 100 Hz or 120 Hz for test frequency would give much bette

82 In all cases, it is best to check with the manufacturer’s data sheet in order to determine the best test frequency to use for measurement. Sel

83 out of accuracy or erroneous. Series mode is use because large capacitors often have higher dissipation factor and lower internal resistance.

84 Capacitance When measuring capacitors, it is always most desirable if the dissipation factor is low. Electrolytic capacitors inherently have a

85 provide an option for DC resistance measurements. Therefore, when measuring a resistive component that is designed to be measured with DC, rea

86 Guard terminal is also used to minimize noise and to help minimize parasitic effects coming from the component to be measured, thus allowing hi

87 SPECIFICATIONS Below are some remarks in regards to all specifications pertaining to both 878B and 879B LCR meters. *Specifications are subje

7 TABLE OF CONTENTS Safety Summary ... 1 Safety Guidelines ...

88 General Specifications Items 879B 878B Measurement Parameters L/C/R/Z/D/Q/θ/ESR L/C/R/D/Q Test Frequency Accuracy is 0.02% of actual frequency

89 off Power Consumption ≈ 28 mA (under full power battery) for operation/ 2 µA after Power-off. Power Requirements 1) DC 9V Battery 2)Ext. AC Ada

90 Frequency = 1 kHz Range Max Display Lx Accuracy DF(Dx <0.5) Measurement Mode 100 H 100.00 H 1.5% + 3 digits 1.5% + 50 digits Parallel 40 H 3

91 400 μH 399.99 μH 0.9% + 2 digits 0.9% + 50 digits Series 40 μH 39.99 μH 2.8% + 3 digits 2.8% + 50 digits Series Capacitance Frequency

92 Frequency = 1 kHz Range Max Display Cx Accuracy DF(Dx <0.5) Measurement Mode 1000 μF 1000.0 μF 3.7% + 3 digits 3.7% + 50 digits Series 400 μ

93 400 nF 399.99 nF 0.5% + 2 digits 0.5% + 50 digits Series 40 nF 39.999 nF 0.5% + 1 digit 0.5% + 50 digit --- 4000 pF 3999.9 nF 0.5% + 2 digits 0

94 ESR* Frequency = 100 Hz*/120 Hz/ 1 kHz/10 kHz* Range Max Display ESR Accuracy Measurement Mode 1000 Ω 999.9 Ω 0.5% + 2 digits Series 100 Ω 9

95 MAINTENANCE WARNING: Do not perform any service by yourself. Service should only be done by qualified personnel and trained technicians. Ser

96 immediately. Doing so will immediately damage the instrument and void it’s warranty. Before cleaning this meter, make sure the power is OFF a

97 SERVICE INFORMATION Warranty Service: Please go the support and service section on our website www.bkprecision.com to obtain a RMA #. Return th